学步园

{
    for (i=1; i<=length($1); ++i) 
    if (substr($1, i, 1) > "\177") 
    {
        print $1
        count1++
        next        
    } 
    else 
    {
        print "INVALID_CHARACTER"
        count2++
        next 
    }
}END{
    print count1"\t"count2
}

保存为 check.awk

awk -f check.awk a.file